Hydrogenic impurities in graded GaAs-(Ga,Al)As quantum-well wires in an electric field

被引：15
|
作者：
Kasapoglu, E [1 ]
Sari, H
Sökmen, I
机构：
[1] Cumhuriyet Univ, Dept Phys, TR-58140 Sivas, Turkey
[2] Dokuz Eylul Univ, Dept Phys, Izmir, Turkey
来源：
PHYSICA B-CONDENSED MATTER | 2002年 / 315卷 / 04期
关键词：
shallow donors; quantum-well wires; electric field; polarizability; graded well;
D O I：
10.1016/S0921-4526(02)00469-6
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The electric field dependence of polarizability and binding energy of shallow-donor impurities in graded quantum-well wires is calculated by a variational method and in the effective-mass approximation. We have considered a finite confinement model and the results are compared with that of infinite confinement potential. Our calculations have revealed the dependence of the impurity binding and polarizability on the field direction in the graded quantum-well wire. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：261 / 266
页数：6
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